In a lot of ways it's like creating a web application. However, it runs on the user's desktop.
Ranked in these QuestionsQuestion Ranking
Pro Relatively low barrier to entry
No need to learn native UI APIs for multiple platforms.
Pro Has a built in packager which allows you to package web apps
the electron packager tool allows you to package your web app for any target platform that you desire, as long as you provide the correct information.
Con Extra effort may be required to make things look native on each platform
Con Mobile platforms not supported
According to documentation only Windows, Linux and Mac are supported, no mobile platforms.
Con Looks and feels like an alien
Requires a bit of system memory, and makes applications bulky due to the fact that all your web apps made in electron work in a NodeJS Shell that is basically a web browser displaying your app.